package com.itheima.action;


import java.util.ArrayList;
import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Controller;

import com.itheima.domain.FixedArea;
import com.itheima.service.FixAreaService;

@Namespace("/")
@ParentPackage("json-default")
@Scope("prototype")
@Controller
public class FixAreaAction extends BaseAction<FixedArea>{
	
	//注入Service
	@Autowired
	private FixAreaService fixAreaService;
	
	@Action(value="fixArea_save",results={@Result(name="success",
			location="./pages/base/fixed_area.html",type="redirect")})
	public String saveFixArea(){
		fixAreaService.save(model);
		return SUCCESS;
	}
	@Action(value="sreach_fixArea",results={@Result(name="success",type="json")})
	public String sreachFixArea(){
		Pageable pageable = new PageRequest(page-1, rows);
		Specification<FixedArea> specification = new Specification<FixedArea>() {
			
			@Override
			public Predicate toPredicate(Root<FixedArea> root, CriteriaQuery<?> query,
					CriteriaBuilder cb) {
				List<Predicate> list = new ArrayList<Predicate>();
				if(StringUtils.isNotBlank(model.getId())){
					Predicate p1 = cb.equal(root.get("id").as(String.class), model.getId());
					list.add(p1);
				}
				
				if(StringUtils.isNotBlank(model.getCompany())){
					Predicate p2 = cb.like(root.get("company").as(String.class), "%"+model.getCompany()+"%");
					list.add(p2);
				}
				return cb.and(list.toArray(new Predicate[0]));
			}
		};
		Page<FixedArea> page = fixAreaService.findByPage(specification,pageable);
		pushPageResults(page);
		return SUCCESS;
	}
}
